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romanna [79]
3 years ago
12

The universe could be considered an isolated system because

Physics
1 answer:
Stolb23 [73]3 years ago
4 0

Answer:

A(many people think that no energy or matter exists outside the universe)

Explanation:

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The two blocks are connected by a light string that passes over a frictionless pulley with a negligible mass. The 2 kg block lie
frozen [14]

Answer: YOU ARE A FAT NEGRO

Explanation:YOU ARE

5 0
2 years ago
A layer of ethyl alcohol (n= 1.361) is on top of the water ( n=1.333) . At what angle relative to the normal to the interface of
hram777 [196]

Answer:

78.35°

Explanation:

THIS IS THE COMPLETE QUESTION BELOW;

A layer of ethyl alcohol (n = 1.361) is on top of water (n = 1.333). To the nearest degree, at what angle relative to the normal to the interface of the two liquids is light totally reflected?

From Snell's Law,

(ni)/(nr) = Sin (θr) / Sin (θi)

Where

θi = Angle of Incidence

θr = Angle of refraction

ni = Refractive index given for ethyl alcohol

nr = Refractive index of medium from which light is refracted

ni = 1.361

nr = 1.333

, θr = 90° ( Critical Angle is reffered to as Angle of Incidence at refracted angle of 90°) (θi = θc)

(ni)/(nr) = Sin (θr) / Sin (θi)

1.361/ 1.333 = Sin (90°)/ Sin( θc)

1.021= 0.894/ Sin( θc)

Sin( θc)= (0.9794

θc = Sin⁻¹ 0.9794)

θc = 78.35°

7 0
3 years ago
Which of the following are capital cities in the Caribbean? Lima La Habana San Juan San Jos Guinea Ecuatorial
mars1129 [50]

Caribbean:
Habana ... Cuba
San Juan ... Puerto Rico
San Jose ... Costa Rica

Other:
Lima ... capital of Peru in South America
Equatorial Guinea ... country in Africa

5 0
3 years ago
Check the attached image for the question~
zheka24 [161]

Answer:

put the full thin g

Explanation:

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2 years ago
What form of energy is a bonfire and a bunsen burner?
xenn [34]

Answer:

heat and light energy

Explanation:

8 0
3 years ago
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